Properties of Substances

Metal at room temperature?

Usually solid

Metalloid at room temperature?

Solid

Nonmetals at room temperature?

Gas, liquid or solid

Color of Metals

Usually silver or white

Color of Metalloids

Usually silver

Color of Nonmetals

Wide variety

Ductility in Metal?

Yes

Ductility in Metalloids?

Yes

Ductility in nonmetals?

No

Malleability in metal?

Yes

Malleability in metalloid?

Yes

Malleability in nonmetals?

No

Luster in metal?

Yes

Luster in metalloids?

Yes

Luster in nonmetals?

No

Electrical Conductivity for Metal

Good

Electrical Conductivity for Metalloid

Semi-

Electrical Conductivity for Nonmetal

Poor

Thermal Conductivity for Metal

Good

Thermal Conductivity for Metalloid

Semi-

Thermal Conductivity for Nonmetal

Poor

Melting and Boiling points for Covalent

High

Melting and Boiling points for Ionic

Low

State of matter at room temperature for Covalent

Solids, liquids, or gases

State of matter at room temperature for Ionic

Mostly solid

Solubility(dissolve) for Covalent?

Both

Solubility(dissolve) for Ionic?

Mostly yes

Reactivity with water for Covalent?

Mostly no

Reactivity with water for Ionic?

Yes

Flammability for Covalent?

Yes

Flammability for Ionic?

Mostly no

Reactivity with metals for Covalent

Needs the addition of heat to react with metals.

Reactivity with metals for Ionic

Can react.